Shikaku

Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

Video Tutorial

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This Month
1.	tanginess	00:05.02
2.	John BidenBlast	00:06.72
3.	qobi	00:07.09
4.	Noridice	00:08.42
5.	kroller	00:08.49
6.	Zetres	00:08.51
7.	GeorgPfleger	00:08.89
8.	venipede	00:09.20
9.	gh	00:09.22
10.	Dorice	00:09.85
11.	vialiv	00:10.55
12.	wyq97	00:11.04
13.	psy7891	00:11.48
14.	plentyofkats	00:11.51
15.	rob69	00:11.60
16.	turtle9000	00:11.87
17.	foggy11	00:11.89
18.	NAShovel	00:12.37
19.	pato3042	00:12.63
20.	kornelbut	00:15.67

This Week
1.	John BidenBlast	00:06.72
2.	Zetres	00:08.51
3.	Dorice	00:10.53
3.	gh	00:10.53
5.	GeorgPfleger	00:10.54
6.	rob69	00:11.60
7.	h kim	00:16.22
8.	The16FigureLimit	00:24.63
9.	aardappel	00:29.96
10.	TheRealSavikivi	00:34.46
11.	lalalapopa	00:37.46
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	--- empty ---	--:--
2.	--- empty ---	--:--
3.	--- empty ---	--:--
4.	--- empty ---	--:--
5.	--- empty ---	--:--
6.	--- empty ---	--:--
7.	--- empty ---	--:--
8.	--- empty ---	--:--
9.	--- empty ---	--:--
10.	--- empty ---	--:--
11.	--- empty ---	--:--
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

MO3
1.	zahhydude1	00:03.48
2.	vowels	00:03.81
3.	demian2	00:04.66
4.	Vicellen	00:04.70
5.	coolcoolguy65	00:05.06
6.	BingBongBob	00:05.15
7.	JZE	00:05.16
8.	numbrr	00:05.20
9.	nabi	00:05.27
10.	mtanzer	00:05.34

AO5
1.	zahhydude1	00:03.76
2.	vowels	00:03.88
3.	demian2	00:04.92
4.	Vicellen	00:05.06
5.	numbrr	00:05.32
6.	BingBongBob	00:05.39
7.	nabi	00:05.41
8.	bearn	00:05.55
9.	JZE	00:05.75
10.	coolcoolguy65	00:06.01

AO12
1.	zahhydude1	00:04.54
2.	vowels	00:04.91
3.	BingBongBob	00:05.84
4.	Vicellen	00:06.24
5.	numbrr	00:06.26
6.	demian2	00:06.31
7.	JZE	00:06.39
8.	bearn	00:06.41
9.	coolcoolguy65	00:06.66
10.	nabi	00:06.91

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	Charlie Li	00:00.207
3.	Paul Bismuth	00:01.692

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-12-05 09:40:39

www.puzzle-shikaku.com

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